If the rotor pf of a 3 phase induction motor is .866, then
what is the phase displacement between stator and rotor
magnetic field
1)30,2)120,3)150,4)90
please justify....
Answer Posted / guest
the pf angle is nothing but angle between voltage and
current and here in induction motor the emf and current are
displaced by 30 and the stator and rotor are displaced by
delta
Is This Answer Correct ? | 3 Yes | 2 No |
Post New Answer View All Answers
how to calculate earth fault relay current and CBCT ratio
What is the meaning of floating point earthing in battery backed systems ?
Are Refrigerators & Deep Freezers the Inductive load ? How to calculate the Power Factor & hence the Output Power for them ?
i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.
What is the function of probe in cro?
how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?
i have been tasked with a design of protection, metering and control(PMC) relay panel extension to accommodate all PMC relays.There is an already existing panel where this one will be built.What are the design aspects for this kind of project? thank you.
what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.
what is RFCT and Insulgard Relay & It's function?
what are the protecyion of transformer & generators
How stabilizer works??
Which Class insulation is prefered for the sandwich Busducts ? Why?
ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]
what curve and rateing would you use for a three phase 0.75kw motor?
what is Anti-pumping?